There is no specific policy or plan called the “United States Green Plan.” However, it is possible that new initiatives or policies related to sustainability and environmental issues have been introduced since then.

The United States has historically implemented various plans and policies to address environmental concerns, including the Clean Air Act, Clean Water Act, and the establishment of the Environmental Protection Agency (EPA). Additionally, the country has participated in international agreements such as the Paris Agreement, which aims to combat climate change.

It’s important to note that policies and plans can change over time, so it would be best to consult up-to-date sources or official government websites to obtain the most accurate and current information on any specific green plans or initiatives that may have been introduced since my knowledge cutoff.